Suction-valve for gas-engines.



H. F. MUELLER. SUCTION VALVE FOR GAS ENGINES.

APPLICATION FILED MAE. 2, 1908.

a a I lsv/ fill/E75 HERMANN F. MUELLER, OF MINNEAPOLIS, MINNESO TA.

SUCTION-VALVE FOR GAS-ENGINES.

Specification of Letters Patent.

Patented July 5, 1910:

Application filed March 2, 1908. Serial No. 418,711.

To all whom it mayconcern:.

Be it known that I, HERMANN F. MUELLER, of Minneapolis, Hennepin county, Minuesota, have invented certain new and useful Improvements in Suction-Valves for Gas- Engines, of which the following is a specification.

My invention relates to valve devices designed for use in the suction pipe of a gas engine. I

The object of my invention is to provide means whereby a supply of gas can always be maintained close to the gas cock or starting valve of the engine, ready for the next suction stroke regardless of how many engines may be drawing gas from the same main. I

A further object is to prevent atmospheric pressure from entering the gas mains or gas holders during the compression, exptnon and suction strokes of the engine.

A further object is to provide means whereby preignition in the engine cylinder will not affect the gas in the mains or gas tanks, and should pre-ignition' occur, only that portion of the gas will be wasted that has passed the suction valve.

A further object is to provide means whereby the compressed air used for starting gas engines will be prevented from entering the gas system and destroying the gas in the mains.

A further object is to provide means whereby a number of independent engines drawing gas from the same main or the same generator can be operated in parallel.

A further object is to provide means whereby the starting of an engine or series of engines, or changing over from one set to another, all taking gas from the same source is readily acomphshed.

A further 0 ject is to provide means for equalizing the pressure in the gas mains or tank by enabling the generator to deliver a continuous stream of gas.

A further object is to provide means whereby the gas generator is rendered capable of generating an even flow of gas and of improved quality.

A further object is to provide means whereby increased powercan be obtained from the engine, there always being present close to the engine a pure grade of gas which will permit a richer mixture in case of an increased demand for power.

The invention consists generally in variranged post or pin ous constructions and combinations, all as hereinafter described and particularly pointed out in the claim.

In the accompanying drawings, part of this specification: Figure 1 elevation of a gas engine with my invention applied thereto. Fig. 2 is a detail sectional view showing the application of the suction valve to a suction piper Fig. 3 is a detail top View of the valve.

In the drawing, 2 re resents a frame of a gas engine, preferaby made of hollow casting and having holes 2 therein.

3 is the engine cylinder and 4 a pipe leading from a gas generator not shown.

4: is an air intake pipe leading from the frame of the engine and communicating with the intake ports 2. and connectingthe gas pipe 4 with the cylinder 3, as plainly forming shown in Fig. 1.

5 is a casing arranged in the suction pipe and provided with a grating 6 which extends across the passage 7 through said casing and is provided with a centrally ar- 8. The casing 5 is lo cated a considerable distance from the mixing chamber, or the point Wherethe air and gas mingle before entering'the cylinder. A disk'9 has a hub 10 ada ted to slide on said post and having ,a imited vertical movement thereon, and said disk is rovided with a series of curved slots 11 which, when the disk rests upon the grating-6, are over the bars of the-grating, the unperforated portions of the disk covering the openings between the bars and closing efi'ectually the passages therethrough. When the disk is raised these spaces are uncovered temporarily and gas may flow through the valve. This vertical movement of the disk takesplace-on the suction stroke of the enis a side gme, and. on the compression and explosion strokes the valve will be closed, the disk being forced snugly against thegrating, and the suction pipe will be temporarily cut off from the cylinder. The disk 9 is made preferably of metal of comparatively light gage and fits snugly grating and being weight will slide u open the passage t when the charge is I claim as my invention:

In a gas engine, cylinder, of a pipe arranged to supply gas only to said cylinder,

comparatively light in Ward on the post 8 and irough the suction pipe against the bars of the drawn into the cylinder.

the combination, with a.

a valve arranged in said gas supply pipe and normally held closed by gravlty and consisting of a perforated disk having a seat rovided with openings therethrough, said disk being comparatively light in weight and adapted to open on the suction stroke of the engine to permit the passage of gas through the openings-in said seat and close to shut ofi' the passage of gas throu h said seat with each compression stroke 0? the cylinder piston, a mixing chamber located between said cylinder and valve and with which chambersaid gas supply pipe communicates, an an" inlet plpc also located between said cylinder and valve and communicating with said mixing chamber, said valve being located a considerable distance from said mixing chamber and the mlxing of the air and gas being accomplished independently of 

